Aptitude - Number System


An automobile financier claims to be lending money at simple interest, but he includes the interest every six months for calculating the principal. If he is charging an interest of 10%, the effective rate of interest becomes:

If n is a natural number, then (6n2 + 6n) is always divisible by:

2, 6, 12, 20, 30, 42, 56, (__)

Let N = 553 + 173 - 723. N is divisible by:

(1331)-2 ÷ (14641)-3 = (11)? * (121)

37 ? 103 169 257 367


Let N = 553 + 173 - 723. N is divisible by:

40.83 x 1.02 x 1.2 =?

The value of (4.7 x13.26 + 4.7 x 9.43 + 4.7 x 77.31 ) is

Given that 268*74 =19832, find the values of 2.68 * 0.74.

H.C.F. of 3240, 3600 and a third number is 36 and their L.C.M. is 2^4 x 3^5 x 5^2 x 7^2 The third number is:

How many factors of 25*36*52 are perfect squares?

In some code, letters a, b, c, d and e represents numbers 2, 4, 5, 6 and 10. We just don't know which letter represents which number. Consider the following relationships: i) a + c = e, ii) b - d = d and iii) e + a = b Which statement below is true?

Which of the following number is divisible by 24 ?

100010 ÷ 1028 = ?

The ratio of two numbers is 3: 4 and their H.C.F is 4, Their L.C.M is:

If a*b=a2+b2 then 3*5 is equal to

The digit in unit’s place of the product 81 x 82 x ……….x 89 is:

Given set: (63, 49, 35)

71, 76, 69, 74, 67, 72, (__)

How many number are there in range of 10 to 106 such that their digit sum is 18 ? For ex. 99000, 9072, 90027, 66006.. .

The H.C.F. of 2923 and 3239 is :

Find the number of ordered pair of positive integers (a.n) such that an+1 − (a + 1)n = 2001

11.6 +9.280.464 – 0.2828 + 0.07 - ?

If 3√5 + √125 = 17.88, then what will be the value of √80 + 6√5 ?

On meeting Tony, if Appu and Tony walk towards the spot where Roxy is waiting, how manyminutes have elapsed between Roxy leaving the duo and then meeting them again ?

(704 x 555) ? 55 = ?

6138.85 + 2015.819 = ? + 2584.0259

Two numbers, both greater than 29, have H.C.F. 29 and L.C.M. 4147. The sum of the numbers is:

The remainder, when (1523 + 2323) is divided by 19, is?

0.02 x 0.5 = ?

7 x ? =29.05

The unit’s digit in the product 274 x 318 x 577 x 313 is :






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